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A control system is needed to control a small shopping center parking lot lighting system and the exterior lighting for the building. The design specifications require that the parking lot lighting and the exterior lighting turn on at dusk automatically. The parking lot lighting should automatically turn off at midnight but the building exterior lighting should remain on until dawn when it is turned off automatically. The system should repeat daily and should not require adjustment for the change in the seasons. Locate and specify an appropriate sensor if it is to operate at 120 vac as an input to a PLC.
What is the blocking probability of the system in (b) when the maximum number of users are available in the user pool?
A square plate of titanium is 12cm along the top, 12cm on the right side, and 5mm thick. A normal tensile force of 15kN is applied to the top side of the plate. A normal tensile force of 20kN is applied to the right side of the plate.
A rectangular loop of wire containing a high resistance voltmeter has corners initially at (a/2, b/2, 0), (-a/2, b/2, 0), (-a/2, -b/2, 0) and (a/2,-b/2, 0). The loop begins to rotate about the x axis at constant angular velocity w.
Implementation of the project with the analog and digital modulation techniques
1. What is Miller capacitance What is its role in High frequency amplifier design Label all the involved variables in the Figure below and derive an expression for the Miller effect capacitances (input and output).
1) For a forwarard converter, derive the minimum value of Vr - as a function of the input voltage Vg, the duty cycle D, and the turns ratio N1/N2 - that will cause the transformer magnetizing current to be reset to zero by the end of the switching..
what is the shortest possible line length that would exhibit the desired reactance at its input?
Design a circuit to capture the pressing of buttons (momentary switches). The circuit should have two LEDs "A" and "B", and two buttons, "A" and "B". Whichever button was last pressed should determine which of the two LEDs is lit.
Design a 16 bit x 16 bit combinatorial multiplier. Use a topology similar to the 4x4 multiplier.
Concider an ac circuit source with an rms amplitude Irms connected to a parallel RLC circuit with resistance R, inductance L, and capacitance C. Derive an expression for the time-average power dissipated by the circuit
A network connected between terminals a and b consists of two parallel combinations that are in series. The first parallel combination is composed of a 10-phm resistor and a 15-ohm resistor. The second parallel combination is composed.
How to determine the suitable size of cable for Electrical Wiring Installation and please with Solved Examples.
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